pedersen



Oct. 27, 1931. o, PEDERSEN 1,828,907

METHOD bF CONSTRUCTION Filed Jan; 14, 1929 Patented Oct. 27, 1931 UNITED STATES OSCAR A. PEDERSEN, OF NEW. YORK, N. Y.

METHOD OF CONSTRUCTION '7 Application filed January 14, 1929. Serial No.' 332,289.

This invention relates to an improved method of construction. Theinvention is designed particularly for application in the formation and constructionof refrigerators and ice boxes but is equally adapted to other articles of similar and analogous nature. In general, the invention contemplates the pro vision of a method for casting the ice box or other article in the desired form and for constructing the article by casting in a unitary piece rather than assembly and fastening of parts, as is the usual practise.

The improved process is illustrated and exemplified in the accompanying drawings,

in which Figure 1 is a sectional elevational view of an ice box or other article in the process of formation in accordance with the present invention;

Figure 2 is a plan view of the arrangement of Fig. 1;

Figure 3 is a sectional view of a fragment of a modified element of the construction.

In the practise of the invention, the ice box 2601' other article is cast in a mold which is formed of a plurality of plates 10, preferably of glass and assembled in detachable and removable formation by beams or frame members 11. Some of the frame members may be notched at their corners as at 12 to receive the corner edges of the glass plates in overlapping relation and to maintainthe assembly of the plates in service. The particular construction of frames is optional and may be varied as desired. The plates form the exterior surfaces of the article and glass is preferred as the material of the plates as it imparts a smoothvfinish to the surface. It will be noted that plates are positioned in the sides and bottombut. the top is open to allow the casting material,preferably a cementitious material,-to be poured in.

The mold for the interior surfaces of the article is made up of a box-like element 13, complete on all sides. This element may, for example, be formed of plates or slabs of a cold-insulating material,cork, asbestos or the like,or it may be composed of plates of composite material, as in Figure 3, wherein one side 14, is of cork or other insulation and heat through the walls.

the other 15, of imitation marble'having a smooth finish and which imparts a smooth finish to the interior surfaces of the article. This insulating materialis for the purpose of preventing transmission and conduction of The interior mold, which really forms the inner surfaces of the article when completed, is assembled in spaceddisposition from the glass platesof' the sides and bottom to leave space for the wall. material. .It is held in its position by suspension through a suitable connecting member 16, from a temporary cross beam-or support 17,- which rests on top ofthe outer framework. 7

The parts are now inposition for the casting of the walls and the cementitious material-is poured in at the top, fills the spaces surface is used as the bottom. of the article and need not be finished as nicely as the other surfaces. The interior mold 13. is a permanent part of the article and is not removed.

The glass plates are preferred in the process as these are readily available and give a the smooth finish desired. rThey are not essential. however, and substitutes might be selected in place thereof- If desired, the interior surfaces of the plates may be painted with dye solutions to provide the outer surfaces with beautiful colors simulatinga natural ,marble. Such solutions are optional and, if used, many different kinds might be selected.

In the process as thus described, no provision has been made for openings in the walls and for doors. Door openings may be left by employing frames defining door spaces and keeping out the cementitious material therefrom during the casting. Numerous other variatlons and alteratlons may be resorted to in the practise of the invention without departing therefrom, and I desire to be limited by the state of the prior art and the scope of the appended claims.

l/Vhat 'Iclaim is:

1. The method as characterized, which comprises assembling members to form an outer mold, suspending a box-like element within said mold members and in spacedrelation from the sides and bottom, thereof, pouring a cementitious material within the spaces between the sides and bottoms'of the boxlike element and mold members, and removing the suspension means and mold members after the material has set.

2. The method 'as characterized, which comprises assembling members to form an outer mold, suspending a box-like element from astemporary support on said mold members within the mold members and in spaced relation from the sides and bottom thereof, pouring a cementitious material within the spaces between the sides and bottoms of the box-like element and mold members and above the top of the box-like element, and removing the temporary support and mold members and suspension element after the material has set.

3. The method as characterized, which comprises assembling removable outer mold members of glass, painting the interior sur- "faces of the glass with a dye solution, suspending'a box-like element within said mold members andin spaced relation therefrom, pouringa cementitious material between the box-like element and outer mold members, and removing the suspension means and mold members after the material has set.

4. The method as characterized, which comprises assembling removable outer mold -members of smooth material such as glass, to

form a mold having bottom and sides, suspending a box-like element, composed at least in part of cold insulating material, from a temporary support on said mold members and in spaced relation from the sides and bottom thereof, pouring a cementitious material within the spaces between the sides and bottoms of the box-like element and mold members and above the top of the box-like element, and removing the temporary support, mold members, and suspension element aftert-he material has set.

In testimony whereof, I have hereunto set my hand.

OSCAR A. PEDERSEN. 

